Answer
a) $25°$
b) $90°$
c) $147°$
Work Step by Step
a) $180 - 155 = 25°$
b) $180 - 90 = 90°$
c) $180 - 33 = 147°$
Basic College Mathematics (9th Edition)
by Lial, Margaret L.; Salzman, Stanley A.; Hestwood, Diana L.
Published by
Pearson
ISBN 10:
0321825535
ISBN 13:
978-0-32182-553-7
Chapter 8 - Geometry - Review Exercises - Page 614: 16
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